Selector mechanism for automatic phonographs



E. F. ANDREWS SELECTOR MECHANISM FOR AUTOMATIC PHONOGRAPHS Nov. 21',1950 Filed Aug. 9; 1943 ll Sheets-Sheet l Nov. 21, 1950 E. F. ANDREWSSELECTQR MECHANISM FOR AUTOMATIC PHONOGRAPHS l l Sheets-Sheet 2 FiledAug. 9, 1945 Nov. 21, 1950 E. F. ANDREWS 2,531,374

SELECTOR MECHANISM FOR AUTOMATIC PHONOGRAPHS Filed Aug. 9, 1943 llSheets-Sheet 3 I //l ////I l/A I! Nov. 21, 1950 E. F. ANDREWS 2,531,374

v SELECTOR MECHANISM FOR AUTOMATIC PHONOGRAPHS l1 Sheets-Sheet 4 FiledAug. 9, 1943 v 1950 E. F. ANDREWS 2531,34

SELECTOR MECHANISM FOR AUTOMATIC FHONOGRAPHS Filed Aug. 9, 19 .5 11Sheets-Sheet 5 I lw Wm! 21, 1950 E. F. ANDREWS 9 9 SELECTOR MECHANISMFOR AUTOMATIC PHONOGRAPHS Filed Aug. 9, 1943 ll Sheets-Sheet 6 Nov. 21,1950 E. F. ANDREWS SELECTOR MECHANISM FOR AUTOMATIC PHONOGRAPHS FiledAug. 9, 1945 11 Sheets-Sheet 7 ii'mn U M.- wwfdm w Nov. 21, 1950 E. F.ANDREWS 2,531,374

SELECTOR MECHANISM FOR AUTOMATIC PHONOGRAPHS ll Sheets-Sheet 8 FiledAug. 9, 1943 ML n w w W 2 3 7206M: mfdww, 099W W Nov. 21, 1950 E. F.ANDREWS 2,531,374

SELECTOR MECHANISM FOR AUTOMATIC PHONOGRAPHS Filed Aug. 9, 1943 11Sheets-Sheet 9 Mal/M770 N 21, 1950 E. F. ANDREWS 2,531,374

SELECTOR MECHANISM FOR AUTOMATIC PHONOGRAPHS Filed Aug. 9, 1945 11Sheets-Sheet 1o Nov. 21, 1950 E. F. ANDREWS 2,531,374

SELECTOR MECHANISM FOR AUTOMATIC PHONOGRAPHS Filed Aug. 9, 1945 11Sheets-Sheet 11 Patented Nov. 21, 1950 UNITED STATES PATENT OFFICESELECTOR MECHANISM FOR AUTOMATIC PHONOGRAPHS' Edward F. Andrews,Chicago, Ill., assignor, by

mesne assignments, to J. P. Seeburg Corporation, Chicago, 111., acorporation of Illinois Application August 9, 1943, Serial No. 497,920

7 Claims.

Another object of the invention is to provide an improved selector whichmay be mounted on the phonograph or which may be located in remoterelation thereto.

- A further object of the invention is to provide an improved selectorfor automatic phonographs, said selector being adapted and arranged forconnection of a plurality thereof to a single phonograph.

A further object of the invention is to provid an improved selector forautomatic phonographs which is adapted for connection to any of a largenumber of types of phonograph.

. A further object of the invention is to provide a selector for anautomatic phonograph comprising means on the phonograph and means in thecontrol unit adapted to move synchronously, and

having means in the remote control unit for arresting both synchronouslymoving means, to determine the playing of a particular record.

A further object of the invention is to provide an improved selector foran automatic phonograph of this type in which the -means on thephonograph, moving in synchronism with the control unit, is driven bythe phonograph mechanism to control the operation of the means on theselector unit, the first said means bein arrested by an impulse from thecontrol unit.

A further object of the invention is to provide a system of this type inwhich the synchronized means on the phonograph is rotatable, and thesynchronized means on the control unit is also rotatable.

A further object of the invention is to provide a system of this type inwhich the synchronized means on the phonograph is reciprocatory, and thesynchronized means on the control unit is rotatable.

' A further object of the invention is to provide a system of this typein which the synchronized means on the phonograph is reciprocatory, andthe synchronized means on the control unit is also reciprocatory.

A further object of the invention is to provide a selector comprising acircle of actuable elements in the path of a rotating member adapted tocooperate with an actuated element to cause the playing of a recordingon one face of a double-faced disc record, and to cooperate with anotherof said elements to cause the playingof the recording onthe other sideof the same rec- A further object of the invention is to provide aselector in which a plurality of selector elements move in synchronismwith amovable selector means on the phonograph until an electricalimpulse controlled by one of said selector elements effects theselection of the desired recording.

A further object of the invention is to provide means for maintaining aplurality of selector units in synchronism with each other so that anyrecording can be played by a manual selecting operation performed at anyone of said selector units.

A further object of the invention is to provide an electromagneticescapement adapted to move a member past a series of selector elementsin such a manner as to cause an electrical impulse efiective to causethe playing of a desired recording when the moving member encounters anactuated one of the series of selectorelements. Aiurther object is toprovide a selector comprising a member moving past a series of actuableelements and an: electromagnetic escapement adapted to produce theselectin impulse upon the energization'of the escapement, and torestore. an actuated element to unactuated position when the escapementis de-energized.

A further object of the invention is to provide one or more selectorunits synchronized with selector means on a selective automaticphonograph and remote therefrom, adapted by manual means at the selectorunit to produce an electrical impulse which, when transmitted to theselector means on the phonograph, will cause the selection of thedesired recording.

A further object of the invention is to provide improved coin controlmeans.

A further object of the invention is to provide a selector for selectiveautomatic phonographs in which a moving selector device associated withthe phonograph produces a series of electrical impulses to cause thecorresponding movement of a selector member in synchronism therewith,which member cooperates with manually controlled means for electricallyarresting the selector device to effect the selection of any desiredrecord- A further object of the invention is to provide a remote controlselector comprising an electromagnetic escapement' for maintainingsynchronism between a moving member in the selector unit and a movingselector element associated with the phonograph.

Another object of the present inventionls the provision of a new andimproved selector system for automatic phonographs wherein movablemembers at the selector units are maintained in synchronism byelectrical means resiliently tendare synchronized after power is againsuppliedat'o.

the system.

Another object of the present inventioniisito.

provide a new and improved selector system for an automatic phonographwherein selections: to be played are stored at a remote selector unitand are individually transferred. to" the phonograph as the selectionsare played.

Other objects, advantages, and capabilities of the invention will appearfrom the following description of preferred embodiments thereof, taken:in conjunction: with; the accompanying drawings, in which:

Fig. 1. is anelevational; view; partly broken away, of a chassisaof"aphonograph: to: which my invention may beapplied;

Fig; 2 is an enlarged sectionaliplandetail, view, with parts omitted,the sectionbeing'taken on the 'line.2.-2iof Fig; .11;

Fig. 3 is a fragmentary sectional detail; the

section beingtakemon the linei3'3 of Fig; 2and rotated ninetys degreesclockwise; Theview'also includes partsnottshown in Fig.2,v

Fig". 4 isi'a: front view ofiazselectorfunit embodying: my invention.One: of these: unitsmay be located at some suitable place upon thecabinet housing the phonograph chassis illustrated. in

Fig; 1;. as at the: front: thereof; and: other unitsmayrberlocated:at'zvariousrplaces near: or far-from theiphonographi;

- Fig.2 his a: fragmentary-"vertical section-there through, the"section: being taken: on: the broken line:5i- -5-.of-Fig. 4;?

- Fig.1 6" is.-.an .eni'arged'sectional eievation; partly bri'ihen,away; of. the. selector: shown. in Figs; 4 "anch 5c the section being:taken; 0117. the line: 6-6 f? Fig:

Fig. 7- is afragmentaryviiaw similar-"to- Fig. 6 showing the elementsin? a different position of adjustment;

'Fig:- 8 is" a similar fragmentary view' showing the: manner-in which:thecontact controlling dog isreturnedtcrinitial position;

' Fig: 9- is: a; fragmentary: view similar to Figs. 7 and8 showing themanner inwhich the cancel disc- H! ismoved to refease actuated pins;

Fig. 10' is a fragmentary sectionaldetail taken along line Iii-I0 ofFig; 6- andshowing the contact, controlling dogand the contact-arm: insection Fig. 11 is a? fragmentary sectional, view, the

sectionbeingtaken on the line. l-|l'i of-Fig: 5, showingcertain;elementsadapted tar.- arrest the motor; after apredetermined degree: of:revolution;

Fig.12 is a similar view showing the: parts" in difierentrelation;

Fig; 13 is still, another similar View showing the parts inanotherrelation;

view, taken axially of pin 208 in Figs. 15 and 16, and; showing the.details ofthe governor control shown in Figs. 15 and 16';

Fig. 19 is an elevational view of a modified form of the invention, inwhich a solenoid is employed insteadofa motor;

Fig. 20 is a similar fragmentary view showing the parts of theembodiment of Fig. 19 in a different position of adjustment;

Fig. 21 is a diagrammatic view of the selector illustrated in Figs. 1 to14 inclusive, provided with a'coin controlled mechanism in the remoteselector unit;

Fig; 21 is a sectional detail taken on the line 2|* --2l of Fig. 21;

Fig; 22 'isa diagrammatic view showing amodified;for,m of coin controlFig. 23is.a plan view showing a modified form of the. invention,employing a solenoid and escapement drive;

Fig; 24 is an'elevational view, partly. in section, showing. the driveelements of'Fig. 23

Fig. 25 is a diagrammatic view showing the mannerin which my improvedselector isadapted to another automatic phonograph;

Fig. 26isa diagrammatic view showing in perspective part ofthestructural elements of the system shown in Fig: 25;

Fig. 27 is a fragmentary view of certain elementsshown-in Fig. 26,.andillustrating themanner inwhich the impulseswitch is closed and theactuated pin. returnedto normal position;

Fig. 28-is a diagrammatic view showing a modified form of selector inwhich an element moves successively in one,direction. and in the otherdirection,.controliing a phonograph of the typeillustrateddiagrammatically in Fig. 25;

Fig. 29 is a fragmentary elevational' view illustrating eemodificationof the embodiment of the invention illustrated .in-Fig. 28;

Fig. 30-is a diagrammatic view of another embodiment of the presentinvention illustrating a different type of synchronizing apparatus; and

Fig. 31 isa diagrammatic representation ofthe electrical connections ofa portion of the apparatus shown in Fig. 30.

Referring to-the drawings, Fig. 1 illustrates the chassis of aknownautomatic phonograph, manufactured by the J. P. SeeburgCorporation, which is disclosed in detail in Carl G; Freborg PatentNo. 2231139,- dated April'l, 1941, and Carl G. Fr-eborg et al. Patent No.2,243,698, dated-May 27, 1941. The machine about to be-described andinzconjunction with which the present invention is shown, is-bestillustrated in Patent No. 2,237,139 and it corresponds particularly tothe embodiment illustrated in Figs. 14, 15 and 16 of this patent, whichembodiment is a modification i1- lustrated in-Figs. 1 to 13, inclusive,of the patent. Inasmuchv as the details of construction and operationmay be found in the said. patents, only such description of theapparatus as is deemed necessary for a clear understandin of the presentinvention is included herein. This machine in. general comprises aplurality of slidably mounted and apertured record carriers 59, whichare adapted to be translated individually from the right to the left forplaying, by means of a reciprocable carriage 4|. The carriage i! isprovided. with a plurality of record carrier enga. ing means 42, therebeing one such means for each record carrier. The engagement of one'ofthe record carrier engaging means 52 with its associated carrier 40 iscontrolled by an assembly of arms 43-which are mounted so as to projectoutwardly from a vertical shaft 44. The arms 43 are arranged at variousheights so that each is adapted to engage one of the record carrierengaging means 42. For this purpose, the arms 43 are arranged on theshaft 44 in helical fashion so that only one of the arms 43, in anyparticular position of the shaft 44, is able to engage its associatedcarrier engaging means 42. A more detailed description of this apparatusmay be found in the above mentioned. Patent No. 2,237,139.

The phonograph comprises a turntable 45, which is adapted to be raisedinto its full line position in Fig. 1, that is, a position above thelevel of the stack of record carriers 45, and to be moved downwardlyinto a position below the level of the stack of record carriers 48. Theshaft 46 of the turntable passes freely through a turntable driving gear41. When the turntable is in its uppermost position, the gear 41 isoperatively connected to the shaft .5 by a clutch 51 including a membersecured to shaft and adapted to be connected to gear 41, as clearly setforth in said Patent No. 2,237,139. The lower end of the shaft 45 issupported by a bearing 48 operatively connected to and movable with theshaft, and to g.

which an arm 49 is connected by a link 56. The arm 49 is biased upwardlyby a strong spring 5| connected to the arm. The arm 49 is connected by alink 52 to an arm 53, pivotally mounted on the chassis. The arm 53carries a roller 54, which is adapted to cooperate with a cam 55 mountedon the cam shaft 55, which extends across the chassis. It will beunderstood that when the cam 55 rotates from the position shown in Fig.1, the arm 53, link 52, and arm 49 will be moved downwardly against thetension of the spring 5|, and that the turntable 45 will be moved to itslowermost position, below the level of the stack of record carriers 45.During the latter part of a complete revolution of the cam 55, theturntable 45 will be moved up by the spring 5| to its uppermostposition, in which it is shown in Fig. 1.

The cam shaft 56 carries an arm 58, which is connected through pin 59and spring 55 to a link 6|. The link 6| is pivotally connected at 6 |-Ato the carriage 4|, so that this carriage is caused to move to the rightand back to the left during each revolution of the cam shaft 56. The pin59 is located in a slot 62 in the link 6| to provide for lost motion atthe left hand position of the carriage 4|.

The cam shaft 55 carries a cam 63, which is adapted to cooperate with aroller 64. The roller 64 is carried by an arm 55, which depends from alink 55. The link 55 is supported at one end by a pin 61, carried by thechassis, this pin extending through a slot 68 at one end of the link 65.The opposite end of the link 56 is connected to a toothed sector 59,which is pivotally mounted on the chassis, and engages a pinion E5 onashaft "H. The shaft carries a bevel gear 72, which meshes with a bevelgear 13 on the shaft 44. The link 65 is biased to the left, as viewed inFig. 1. by a spring 14 suitably connected to the link and the chassis.The pinion It is freely mounted on the shaft H and is engaged by a dog84 carried by a plate 85 (Fig. 3) also free on the shaft H.

tion. If the shaft H is held against rotation, the clutch member 86slips on the boss 81. When the link 66 moves in the opposite direction,that is, toward the left, as viewed in Fig. 1, the sector 69 merelyrotates the pinion 10, this pinion slipping past the dog 84 during thisreverse movement. The shafts 44 and H are held against rotation, whenthe carriage is at the right end and the desired carrier is to beselected, and the parts are properly positioned by the engagement of anabutment member 88 on the carriage 4! with a roller 89 on an arm 90(Fig. 2). The arm 90 carries a roller 9|, which engages any one of thenotches 92A of a notched wheel 92, which is rigidly mounted on the shaft44. The wheel 92 has a peripheral series of uniformly spaced notches92--A which correspond in number to the arms 43. After the carriage 4|has moved to the left, as viewed in Fig. 2, carrying with it a recordcarrier, the roller BI is ineffective to hold the shafts 44 and IIagainst rotation.

The cam 63 and associated parts are arranged so that on each revolutionof the cam shaft 56, the shaft 44 is given a complete revolution. In themachine disclosed in the aforesaid Patent No. 2,237,139, the shaft 44 isgiven a complete revolution and an additional angular movementcorresponding to the angle between two adjacent arms 43. This samedegree of rotation may be used in the present embodiment, although asactually shown, the cam 63 is arranged to give the shaft 44 a completerevolution for each rotation of the cam shaft 56.

The machine is operated by a motor 15. When the motor 15 is operating,the gear 4! is driven continuously by means of a worm It on a shaft llcoupled to the shaft of the motor. The cam shaft 55 is operatedperiodically from the motor through a gear 18 (shown onlydiagrammatical- 1y), which is driven by a worm gear (not shown) actuatedby the shaft ll. Clutch means (also not shown) controlled by a latch arm19 connect said worm gear to the shaft ii. The latch arm 79 is held indeclutching position during playing of a record by means of a latchmember 80. The latch arm 58 is actuated by player arm trip means 3%,carried by a shaft 32, to effect release of the latch as. The shaft Eli.serves as a pivotal mounting for the player arm 33. When the arm 83moves inwardly to a sufficient degree toward the center of the record,or when the arm 83 is subjected to an oscillatory movement due to aneccentric groove at the center of the record, the member 5! releases thelatch #35 so that rotation of the cam shaft 56 ensues. Means (not shown)are provided on the cam shaft for effecting the relatching of the latcharln it at the end of one revolution. The cam shaft 55 also carries acam which is adapted to swing the tone arm mounting shaft 32 back toinitial playing position.

The machine, as thus far described, operates continuously as long as themotor 15 is running. If the turntable is in the position in which it isshown in Fig. 1 and the motor is started, the turntable 45 movesdownwardly and at the same time the link E55 begins its movement towardsthe right, so as to rotate the shaft 44 through at least one revolution.The carriage 4| moves to the right returns the record carrier 44 in theout position back intothe stack. When the carriage 4| thus moves to theright, one of its record carrier engaging means 4-2 is caused to, engage its record carried with the aid of the particular arm 43, which isdirected away from the observer, as viewed in Fig. 1. The carriage 4|'then"=moves to' lthe i left, carryingawith it thereoi ord-carrier whichhas been thus engaged by one of 'the :recoi'd' :ca'r rier -.engaging 1means 42 When thercarriage M has transportedthe record car- Trier withthe record "supported -thereon-i 'overan rapertured portion thereof-to"its extreme left position, aswiewedin'Fig: 1, the turntable movesupwardly; passingthrough the aperturem the record carrier"- andreceiving the record irom-that carrier, which record is elevated-untilit engages vthe ickup needle. The turntable is' now in rofltationand-playing or the record begins. When the turntable is'elevated to'itshighest position,

'theiatch arm "i9 is'lat'ched out and the rotation of' the cam shai'tfifistops. When the record is "-completely'played, the' tone arm"releases the latclrarm' ii-and thecycle isrepeated. The turntable"'45,moving downwardly; returns the played "recoi'dto its carrier, whichcar'rier returned i-to the staok,'=wherl the carrier ti moves again tothe right. lnthe'symphonola'as1nanufac- -tured;"the" camcorresponding tothe cam' 63 does T not become" effective until the turntable is moveddown to its extreme 'position and thecarria-ge far described, in anautomatic phonograph com-- prisinga member, the shaft :14, which has apinrality of positions, each determinative of a rec- -ord to be played.

Upon the shaft 44, immediately below the --wnee1 92, I rigidly mount alatch disc 93 provided with a' series of peripheral rectangular recesses93A corresponding in number and position to l the arms 43. I pivotallymount upon the chassis -of. the'machine a latch arm e4, which isprovided :with a tooth 95, adapted to enter any one of said recesses, asbest shown in Fig. 2. The latch Q i is 'provided'vl ith a detentQtywhiclris adapted to be engaged with the armature 95- of a relay- 9'5so uasto hold the latch 94 in unlatehed position.

.Rigidly connected to the latch 94 is an arm $55,

which is adapted to be engaged by the carriage :24! when it moves to itsextreme ri ht hand position (which is somewhat farther to the rightthan:wshown in Fig. 2). When the arm 93 is thus moved,.the latch 94 is swungto the right, as

*viewed in Fig. 2, and is heldin disengaged posisitiorrby the armatureof the relay 9'! until that a'relay is energized. A' leaf switch 99,including 'two blades, one of which is movable by latch member 94, isadapted to cooperate with the latch imember" 94. This switch is openwhen the latch illis'disengaged and is closed whenever the latch 94 isin latching relation with the latch wheel 93,

was shown in Fig." 2.

Means are provided whereby a series of imxx p'ulses are created duringthe rotation of the .i'shaft M. 1T0 obtain these impulses'I may con-".veniently employ the notched wheel-92as an opserating means. Zhiswheel engages apiece ofin- :sula'tion lllflmounted upon an insulated armlill,

' which. "is pivotally smountedon? the 'chassi f by 1 means of asuitable bracket ltli- -A. .The a1m sul'ated' from the chassis.

.191 is provided-with a contact'- )2, which is adapted to engage anddisengage'contact IGB in- Thearm i0! is biased bya spring (not shown)aroundits'pivot sothat the'piece of insulation I03 bearsagain'st-the'pe-"riphery of the wheel92. When a projection of this wheel engagesthe'piece of insulation -'ill0 -the contacts I02 and-I03 are separated;whenjhow- .ever, the piece of -insulation ltlilimoves intoa recess ofthe wheel- 92; the contact 182 engages 'the contact I63. Consequently,if the shaft is'rotated through an angle corresponding toa'certainnumber ofarms' 43, then the contacts I62 and IE3 will engage thatnumber-of times; so that a. corresponding. number of impulses will passthrough the circuit in which the contacts '5 H2 and I (i3 are located.

As a suitable'place on thechassis- I-"-m0unt a transformer HM and arelay 165; the circuit. con- ..nections for which and functions ofwhichwill be described'in' greater detail hereinafter. At a suitableposition'on the cam shaft 56 is mounted an arm I06, which is adapted toopen a switch iii! at the position of the turntable in which' it isdesired to terminate playing. The preferred position is just whenthe-turntable-has' begun to .move downwardly after the playing ofarecord.

the phonograph or which-may be" located at any suitable distancetherefrom, being connected thereto by suitable wires; as will hereafterbeexplained. My improved selector is capable ofbeing operated by aplurality -ofremote 'control units, to be described shortly, iith-orwithout a unit on the cabinet of the phonograph. Selector elements abovedescribed are includedin'the low er portion of 'Fig; 21. In this figure;the reference numeral 598' (including conductors $3,- 1 95, I 96 and59'!) indicates a cable of-any desired length, whereby the elements of'the selector, which are to be described, may be connected to thephonograph device described above. This figure also showsa similarcable" |es'- (including four conductors. branching out fromthe '-fourspecified conductors included in cable I68); showing the manner in whichany numberof-control units (the two illustrated being indicated byreference characters A and B) may DeCOIIIIBCtEd to the phonograph.Beforedescribing- Fig. 21*in detail, the remainder of the selectorelements will be described in connection with the illustrations of theirphysical elementsymore particularly with reference to Figs. 4 to 14.

Referring particularly to Fig. 4, which illustrates a remote controlunit which is adapted to be mounted on the cabinet of the phonograph,the reference numeral I09 designates a panel on which are mounteda'suitable numberof buttons Iii! corresponding to the-number-ofselections and the number of arms 43. Aswill hereinafter appear, eachone of these buttons corresponds to one particular arm 43. and'can' beemploye'dto effect the location of that particular'nrmW3 in cooperativerelation with the record carrier engaging means 42 to result in thereproductiontof the correspondingrecording. 'The*-buttons i it haveassociated therewith cardholding'poeket means" I! i, which are-adaptedto' receive cards 9* bearing the titles of the recordings correspondingto the individual buttons I I6. In addition to the buttons H6, there isprovided a clearing button H2. As will hereinafter appear, any desirednumber of the buttons Iii) may be pushed inwardly for selection of thecorresponding recordings. The button I I2 may be pushed in momentarilyfor the purpose of returning the buttons III] to their normal outwardposition without the reproduction of the associated recordings.

Rigidly secured to the panel I29 are frame plates H3 and H4. Rigidlymounted on the plate II 3 is a post H6 which projects backward andforward and is located in substantial alignment with the center of thecircle formed by the buttons H6. The post II5 provides pivotal mountingsfor the disc H6. located forwardly of the plate II3, and for a discII'I, located rearwardly of the plate H3. The disc H6 is provided with acircumferential series of notches I I8 (Fig. 6) corresponding in numberand spacing to the buttons III). The plate H3 is provided with a similarseries of rectangular openings H9. The disc II'I is provided withacorresponding series of projections I26, between which the disc isprovided with recesses I2I. In normal condition, the openings H9 and theprojections I20 are in alignment, as shown in the. right hand side ofFig. 6. Each of the buttons III] is mounted on the outer end of a pinI22, which pins extend through the peripheral notches II8 of the disc II6 and the openings II9 of the plate i I3, these pins being normallyalignment with the projections I 20. The disc I I6 is biased in theclockwise direction, as viewed in Fig. 6, by means of a spring I23 (Fig.5)", so that one of the edges of each of the notches IIS bears upagainst its associated pin I22 in the manner shown in the lower lefthand corner of Fig. 6. Each pin I22 is provided with a reduced portionI24 adjacent its forward end. Normally, these reduced portions are inalignment with the plate I I8, as best seen in Fig. 5. Forwardly of thereduced portion I24, each pin I22 is provided with a conical formationI25. It will readily be understood that when any one button I II] ispushed inwardly, the conical cam formation I25 moves along itsassociated notch H3 so that the disc H6 is rotated counter-clockwise, asviewed in Fig. 6, by pushing in any one of the buttons H6. Of course,any number of buttons H6 may be pushed inwardly without effecting anyadditional displacement of the disc IE6. This displacement of the discIIB opens the switch I26, which is carried by the plate H3, the disc H6being arranged when displaced to effect movement of a switch member, asbest shown in Fig. 5. When all buttons are released and returned toinitial position, in a manner which will hereinafter be described, theswitch I26 closes.

Each pin I22 has a reduced terminal portion I27, which normally restsagainst a projection I26 of the disc I IT, in the manner shown at theupper end of Fig. 5 and in Fig. 6. Each pin I22 is biased centrall andforwardly by a spring I28. Forwardly of the reduced terminal portion I21,

each pin I22 is provided with a conical cam for-.

mation I29, and forwardly of the cam portion I26, each pin is providedwith an annular recess I36. When a pin I22 is pressed inwardly, the camformation I29 slips over the projection I26 of the disc III, and thisprojection enters the recess I26 in the manner shown in the lower partof Fig. 5. It may here be noted that the openings' H9 are elongated inthe radial direction so as to permit the necessary outward movement ofthe pin 122, which is necessary for the conicalformation I29 to movepast the projection I20. It will be understood that when a pin I22 ispressed inwardly in the manner shown in the lower part of Fig; 5, itwill be held in that position until it is released. It may be releasedby being pushed outwardly, that is, away from the center, whereupon thespring I28 will draw the It may also be released, together with allother pins I22, which may have an in pin forwardly.

ward position, by pushing the button II2. As best seen in Fig. 5, thebutton H2 is carried on the outerend of areleasing pin- I3!A, which isbiased outwardly b a spring I3I (Fig. 5). The

pin I36A extends through an opening I32 in the plate H3. This pin has areduced portion I33 at its rear end. This reduced portion is normally inengagement with one arm of a bell. crank lever I34,-pivotally mounted atI34-A on the plate H3, the other end of which carries a pin I35projecting through a radial slot I36 (see Fig. 6) in the disc III. Thedisc III is biasedin the counter-clockwise direction, as viewed in Fig..

6, by a spring I31, secured to the disc Hi and to the place H3, so thatthe bell crank lever I34 wise direction, as viewed in Fig. 6, and thedisc III is rotated in the opposite direction so that the projectionsI20 are moved out of the recesses I36 of any pins which are heldinwardly, so that these pins are released and drawn forwardly by thesprings I28.

Upon the plate I I4 is mounted a bearing I39 for a shaft I40, whichshaft is arranged in alignment with the axes of the discs I I6 and III.Rigidly secured upon the shaft I40 are a gear MI and an I w V The shaftI46 is I held in mounted relation by means of a collar I43.

arm I42 of insulating material.

At the outer end of the arm I42 is pivotally mounted a shaft I44 (seeFig. 6). I On the rear side, the shaft I44 rigidly carries a bridgemember I45, which is always in frictional engagement with a contact I 46mounted on the arm I42.

contact I46 is grounded, as indicated in Fig. 21.

On the forward side of the arm I42, the shaft I44, J

carries a dog I41 which is adapted to engage the pins I22 as the armrotates.

I 4'1 comprises a. forward pin engaging portion I48 and a rear pinengaging portion I49. pin engaging portion I48 is of cam formation andit is arranged to engage with the rear end I2I of engagement with acontact I50 so that the contact I52 is grounded through the bridgecontact I and the grounded contact I46.

5 and 10. 'When the dog I41 is rotatedin the clockwise direction. asviewed in Fig. 6, by 00- When the button The The arm I42 rotates in theclockwise direction, as viewed from the rear, thatis, asviewed in Fig.6. The dog 1 The The rear pin engaging portion I49 is arranged so thatit is able to contact the end portion I21 of any of the pins I22,irrespective of whether these pins are pushed inwardly or are in normalposition. For this purpose, the pin engaging portions I iBand I49 are indisplaced relation, as best seen inFigs.

adjacent the shaft I44 in Fig. 6. The pin engaging portion I49 isprovided with a cam formationsothat the engagementwith this pin causesthe dog; I47 to return into its position shown in Fig. orelative to thearm I42. It will be understood that this return is effected before thearm Niches-moved so. as to engage the next pin in the; event thatthatpin has been pressed in-, w r ly. The pin engaging portions I48 andI49 of the dog I4'I are employed so that the bridge contact. I45 mayengage the contact I50 for the greatest, possible'portion of the totaltravel of the arm.I,42*between any pin;I22. and the rearwardly adjacentpin I22. In view of the employment of alternating .currentto energizethe relay 91 at...the..phonograph, aswell. as the relay I80 atthe-"selector. unit, a timeof contact. sufficient for. thesalternatingcurrentito pass through itspeak value atqleast. once is desired. Thus,by causing thecontacts I45 and I5n.:to be in engagement for the greatestpossible portion of the movement of arm; I42; a faster operationof armI42 is possible, while still providing a sufiiciently longperiod ofcontact fOr proper energization of the relays.

As. will hereinafter appear, the arm I42 is adapted to move step bystep, corresponding to the distance of one pin to. the other. Thesemovements are in the same direction. For the sake of clarity, ashortdescription of the movement of the arm I42, independent of the rest ofthe mechanism,-is now given.

Assuming that thedog- I41 is in the position in which it is shown inFig. 6 and the'arm I42 begins to move, then the portion I48 of the-dogwill pass all thepins which have-not beenractuated or pushed 'inwardly.The pin engaging portion I49- also' clears all-the pins-I22:When-the-forwardpin engaging portion I48-arrives"at-a--pin- I22 whichhas been pressedinwardly, it engages that'pin and the dog I4] is rotatedslightly in the clockwise direction, as viewed in Fig. 6, intothe-position shown in- Fig. 7. This position isdetermined: by a pin andslot connection I 5-I between-the-dog I4'I'-and-the arm I42. When thedog--I-4-I is-moved intotheposition shown in'Fig. 7, the rear pinengaging portion- I49is-moved outwardly between the first and secondpins be-- hindtheactuated pin. The displacement of the dog-I41grounds-the contact 'I50in-the manner previously described.- Thecontinued movement of the arm I42 causes-the forward; pinengagingportionM8 to move-the actuated pin I22 radially outwardly; as shown in Fig; 7."This outward movement of thepin- I22 disengages'the pin fromthe-discII-I so that thespring I28 connected to that; pin moves itforwardly intoits initial position, being theposition in which the uppermost pin-I22is shown in Fig. 5. As the arm I42 continues to move fromits positionshown in Fig. 7 into its position shown in- Fig. 8; the rear pinengagingportion I49 engages the pin I22 rearward" of the pin I22 whichhad been actuated; and consequently the dog 'lfl'l'ls swung in thecounterclockwise direction, as viewed in Figs. 6, '7, and-8, until itattains the position showninFig."8. This movement of'the dog I4!breakstheengagement between contacts I50 and I45.v The arm I42 moves'to; a slight extent into the position in which it is shown in.,Fig. 6,and itremains in this position until the record... corresponding to the.

actuated pin has been played. The arm I42 is driven stepwise. by meansof a motor I52. shaft I 53 of the motor I52 is. provided with a.definite amount of end play and is so arranged that the shaft I53 ismoved to the right, as. viewed in Fig. 5, when the motor. is energized.One. of the arms of they closing a switch. I54. switch is arranged toserve as a spring, normally biasing the shaft in theopposite direction;that is, towards the left, as viewed in Fig. 5. This arm is insulatedfrom the shaft by insulating material I54 A (Fig. 5). The shaft I53carries a pinion I55. adjacent its leftv hand extremity, which isdesignated I56. The pinion I55 meshes with a gear I51 which is rotatablymounted upon a shaft I58,.-mounte,don the plate H4. The gear I5! isfrictionally, attached to a pinion I50 which meshes with the. gear hill.The gear ratios are such that. one-half revolution of. the gear I57corresponds to the movement of the arm I42 through-a distancecorresponding to the distance between.- the two adjacentipins I22. Thepinion I59;carries two'diametrically opposed radial arms IBfl-whichareadapted alternately to engage the end; I56 of theshaft I53 when it is inits left handposition, as shownin Fig. 5. When the shaft- I 53 is movedto the right, as viewed in this figure, the end I55 of. the shaft I53-isout of the path of an arm, I 60. motor I52. isv de-energized, the endI56 of the shaft. moves to the left, as a result of the deenergizationand previously mentioned end play,

int/01.5116 path of movement of an arm I60 so as to arrest the-pinion-I59 at the end of half a revolution. The gear I5! is mounted relative tothe arms I60 and the pinion I59 by means of a friction slippage, itbeing frictionally held between the pinion and the arms which arecarried by thepinion. Thus, the gear I51 and the pinion I55 may rotate ashort distance as a result of this slippage when an arm I60 is heldimmovable by engagement with the end I56 of the shaft I53. This avoidsany large strain on the mechanism as a result of the inertia of themotor armature when an arm I60 is suddenly stopped. When the motor- I52is again energized, the end I55 of the'shaft I53 is moved to the right,as viewed in Fig. 5, to move the shaft out of the path of movementofarms I60 so that the pinion I59 ma be again driven by the motor. Ifdesired, additional means may be provided for ensuring that the pinionI59-will be arrested at a definite position. For this purpose, I securefor rotation with the pinion I59 a cam member I6I which is adaptedduring each revolution tomove an arm I62 rearwardly toward the motor.The arm I62 is mounted on a bracket I63 suitably secured to frame plateII4 so that its movement is frictionally resisted and that the armremains in any position in which it is moved. The arm I62 carries aprojection I64 in alignment with the shaft I53 of the motor I52.. Whenthe motor I52 is energized for a period sufiicient to cause a halfrevolution of the pinion I59, the shaft I53 moves to the right, asviewed in Fig. 5. During this half revolution, the cam I6I engages thearm I62 and pushes its projection, I64 towards the shaft of the motor,thus bringing the projection I64 into the path of the arms I60alternately. When the motor I 52 is de-energized, the shaft I 53 movesoutwardly to the left, asviewed in Fig. 5, thus moving the projectionI64 and the arm. I62 outwardly away from the, motor- Thus, in. any

The.

Consequently, when the event,the arms I60 alternately engage and arearrested by the projection I64 or the end I56 of the shaft I53.Consequently, if the motor is not de-energized exactl at the rightinstant, the gear I51 will nevertheless receive only a half revolution.The projection I64 being moved to the left, as viewed in Fig. 5, whenthe motor I52 is deenergized, and the shaft I53 moving to the right, asviewed in Fig. 5 when the motor is again energized, the arms I69 arefree to move when the motor again begins to operate. Thus, the arm I62and projection I64 act as an additional means of limiting the travel ofthe pinion I59 to onehalf revolution each time the motor I52 isenergized, as they operate mechanically and independently of theenergization of the motor and the consequent position of the motorshaft. The unit shown in Fig. 4 is provided with coin chutes I65, I66,and I61, which may be three in number, adapted to receive coins ofdifferent denominations, such as nickels, dimes, and quarters. Arms(Fig. 21) I68 extend into these coin chutes. Arm I68I extends into coinchutes I65, I66 and I61, arm I68--2 extends into coin chutes I66 andI61; and the other three arms I683 extend into coin chute I61 only. Thearms I68 are carried upon a light hollow shaft I69, preferably ofaluminum, which is axially mounted. A light spring I angularly biasesthe shaft I69 and the arms I68. The latter extend through suitable slotsin the coin chutes into the path of the coins descending through thechutes. The shaft I69 carries an escapement I1I which comprises twodetents I12 and I13. In the normal position of the arms I68, the detentI12 is engaged by one of the teeth of a ratchet wheel I14, which isbiased for rotation in the counterclockwise direction, as viewed in Fig.21, by means of a spring I15. The detents I12 and I13 are located inangular relation relative to the axis of the shaft I69. When a coin isdropped down one of the chutes, the shaft I69 is angularly displacedagainst the bias of spring I18 from its normal position one or moretimes, depending upon the chute employed and the number of arms I68engaged b the coin. Each displacement effects the withdrawal of thedetent I12 out of engagement with the ratchet wheel I14 and theintroduction of the detent I13 into alignment with the next tooth of theratchet wheel (Fig. 21 When the shaft I69 resumes normal position aftereach such displacement, the detent I13 is withdrawn from the ratchetwheel I14 and the detent I12 is introduced into alignment with theratchet wheel I14 so that it engages the next tooth. Consequently, if acoin is inserted in the chute I65, the ratchet wheel will move one toothin the counter-lockwise direction, as viewed in Fig. 21. If a coin isinserted through chute I66, the ratchet wheel I14 will be displaced twoteeth. If a coin is inserted in chute I61, the ratchet wheel I14 will bedisplaced five teeth.

In initial position of the ratchet wheel I14, a pin I16 is in engagementwith an arm I11 which holds switches I18 and I19 open, as shown in Fig.21. When the ratchet wheel I14 is displaced in the counter-clockwisedirection, as viewed in Fig. 21, from this initial position, theswitches I18 and I19 are closed. The ratchet wheel I14 is returned stepby step to its initial position by means of a relay I80. The armature ofthe relay I88 is connected by means of two link members I8l and I82 to aflat spring I83 which is nor- .mally located against a plate member I84.7 When the relay I is de-energized, thespring I83 and 1 the spring I83move the link members I8I and I82 into a position clear of the ratchetwheel I14. When the relay I80 is energized, the downward movement of itsarmature brings the link mem-.

rection, as viewed in Fig. 21, the lower end of.

the shaft I69 is supported on a pin I86, the lower end of which abutsagainst a stationary abutment I-81 located therebelow. The upper end ofthe pin I86 can move away from the ratchet wheel I14, it being guided ina slot I88 in a stationary plate I89. The upper end of the pin I86 isbiased towards the ratchet wheel I14 by means of a light spring I90.Consequently, when the ratchet wheel I14 is rotated in the clockwisedirection, as viewed in Fig. 21, the lower end of the shaft I69 movesoutwardly to allow the tooth of the ratchet wheel I14 to pass.

It is desirable that the springs I19, I98, I15, I83, and I83 should beof small tension so as to reducethe amount of power necessary to operatethe respective mechanisms. I have found that by making the partsassociated with these springs of correspondingly light weight or smallmass,

the natural period of vibration of the system composed of the springsand their associated parts can be kept short. Thus the parts are notlikely to respond to heavy impulses of low frequency, such as a kick ora jar. It will be appreciated that these mechanisms should benon-responsive to any ordinary disturbance which the device mightencounter so that no external shocks can cause the operation of thedevice without the dropping of coins and so that such external forceswill in no other way affect the desired operation. Thus, if the partsI68, I69, I11, I12, I13, and I86 are made very light and such mass asthey have is kept close to the axis around which they swing or move, theresonant system composed of these parts, together with the springs I16and I99, will have a high natural frequency and therefore will notrespond readily to any ordinary external influence. The parts I8I, I82,the armature of the relay I86, and the ratchet wheel I14 should also belight relative to the springs I83, I83, and I15, for the same reason.

Immediately each tooth of the ratchet wheel i14 passes the detent I12,the lower end of the shaft I69 is moved inwardly towards the ratchetwheel I14 so as to hold the ratchet wheel in its new position.

Power is supplied to the device from power lines I96 and I9I, which areconnected to the primary of the transformer I94 and also to the motor15. In one of the motor leads (the one connected to line I96) is theswitch I92. One side of the secondary of the transformer is connected tothe relay 91, to the relay I85, to one side of switch 99, and to the armI6! which carries the contact I92. The other side of the secondary ofthe transformer I84 is grounded and is connected through a conductor I93in the cable I88 to a grounded conductor I94, which is connected to oneterminal of the motor I52.

The other side of the relay 9! is connected to the other side of theswitch 99 and also through a conductor I in thecable I68 to one side ofthe relay, I 80. The other side of the relay I05 is con ass igs ma 1nectedtd 'i'one fsideaof theiswitch zllltiand iSJEZISOZ connected-1throughra :cenductor-f I96 in. theicable:

I08 to one si'de ofdswitch M95. The. other side of:

the ESWitCh' -I EQL'lS grounded; Thecontact. I03 :is.

adaptedto be fengagedibythe :contact I92 and is:-

connccted throughza conductor I 9.? .inzithe cable iflsttoithe otherterminal ofthe motor 152. The

other-aside of the switch 1| (It \is connected-itszone side rotxwswitchI 538;: the othcniside of :whichuisn grounded:v The switchesilfiziandI98-arenormal- 1y openaand are adaptedlto .be'closed whentthe nectedztoonesideof sy-itch1i25; and .isalso cone. 1

nected .to ianxinsulatedaarm ifii which: bears upon. a conductive ring.2.96 mounted;on .th'eearm442,: The ring' fl BS =is connected to thecontact] The operation isas follows? When the machine .is'atrest,itheaswitch. 101 is openteandithe;.turntable1: l3iis at itsuppermost' positiomor "at a position slightly 'below its uppers most.position;. Anyidesired; number of buttons I I6) are moved inwardly.II/OS31E01 t1l8iCO11'SpOIId3-' ingirecords. Actuation of anyiof. the'buttons... opens theswitclr I2iii Coins of correspondingvalue".are-:insertcdin tone or. more lot. the. chutesv I65; 188, or new.The ratchet wheel xi'i lmoves. to woorresponding extent'in .the'counter-clock-w wise direction; as viewed in. Fig. 21; so .as to. closethe switches l'iiand.ilS; The closing of the switch :.I 'l 8. completesacircuit throughlswitchi I79, conductor I96;xrelay I85; and thesecondaryof' the transformer Iii-3. The energization of there1ay'IB5-"closes switches ISZ'and I981 The clos-' ingrof athe switch-S2 completes the circuit of the motorflE so" that the motor drives the'cam shaft 55, the controllingclutch being engaged; Shortly afterithecam shaft has'begurrto move, the switch IQ? closes: The-rotation ofthe:cam shaft causes: the turntable" 53 'to descend; replacing.itsrecord on the record carrier id; Continuedmovement ofi the-earn shaftcausesthe carriageidl to moveto the right to'br-ing the'displaced recordcarrier into'the staclnzof reeord.:carriers.at'the righthand side ofFig. 1. During the descent of. the turntable andthe movement of thecarriage 4| to-.the.right, th'ecanr'6 3 actuates the link :fifitothe'right, as viewed in'Fig. 1, causingcthe shaftfli to rotatei' Theposition of the shafted corresponds to' the position o the arm- M2; andthey move step by step in synchronous relation. Thus, at eachmovement-of thexshaft la-correspondingto the movement'oithis shaft fromtheefcective positionzof one :arm ltltothe efiective position of the:next. arm lS; the contact-6B2 engages contact I93, thus impartingimpulse to the motorIBZ Whichccaus-es it'tozdrive the pinion I59"through a half-revolution; Thishalf revolution is terminated in azmannerpreviously described. Thus, each: movement of the iflzwhich results inthe=-rotation of the wheel 92 through one tooth distancearesults inthmovement of the'arm I42 through a? distance corresponding to thedistance betweenrtwo'adjacent :-ins 522. Each time the motor #52receives an impulse, the switch: I54'is closed', but if the dogidi isnot iii-engagement with 'a pin I22 which has been pushed inwardly,theclosing; of the sizait-ch' ifi l ha's. noefiect, the switch I26 beingopen, as a result of one: or more 131115;!22 beingv pushed inwardly, andthe contact Idficbeing outof engagement with the contact. I58:Thmcontirrzed rotation of'the shaft 44 results in repeatediengagementsbetweencon-- tacts'e-I Miami; I a gregating-in repeated impulsesr to the.motor I EZ-and repeated half revolutions 'of the l inion1l59Ll/Viiem-however; the dog-1411s brought into engagementuwith a-pin: I22.whichw has .been: pushed -.in'wardiy;- the-contact |50 is:- groundedand :a circuit is-completed th1-.ougl1 con---.v tacts M6,Hi5;.la'iilringififigarm I99; switch I54, Whichhaslceerr closed .by theoperationoffithe: motoigrswitch llag relaycladgiand relay 9T. Thisoccurs when anot-ch'. ofthe latch Wheel193 is com ing opposite .thetooth-.93 offithe-latch arm 94.1. The energization of the relay 8'?releases the latch'-.. arm sozthat the tooth dropsrinto this recess-withtheresult cthat thezshaft i is.;held againstrrotas: tions. Thezcontinuedrotation of. the cam shaft 561- mayzzmove the .unk 56 :to .th'e;right,.as viewed im-z. Fig; 1,1 so that it. tends .to continueitherotation:ofI. theshaitt 44;. This, however; is preventediby slip-i pageofitheclutch; ringMBB :upon .the boss 81, as: previously. described. Theshaft 44 is arrestedfin"... any position which cor-responds to, theactuatedca pin l22 :w-hoseactuatiorr has brought. aboutthe: release .ofthen-latch. arm: 94. Since theshaft M-r no longer 'rotates,.; the.contact 1152 remains; cutoff engagement with the contact H333 and: themotor;- I 52.).(5681V8S110 moreimpulsesx.

Thenenergization of the. relay" I 30, which ihasr just .been referredto, .causes the ;.ratchet. :wheel. I14 to :movez-one :step .in theclockwisexdirectiongi, as viewedin ,Fig. 21;... The .rotation of thencamshaft: continues,-. resulting; in; the: complete.-movementof,jthercafliage- M to the right: and... then toxzthetleft.The-arm 43;. which corresponds. to the rparti'culancpin I22.-.-which.hascausedtthez. arrestment of thershaft id; is in position .tocause;theengagement of the correspondinglrecord'carr rier engagingmeansAZiwith: the corresponding; record carrier '40;- Consequently this.particular: record is zmovedfinto;alignmentwith the-turntable 45.;Co'ntinuedrotation of-thecam shaft. 56 moves-theturntablefi upwardly soas to:bring; then recordjinto engagement with the needle -.of. theplayerarm; 83. The turntable: 65 .isthen caused .to rotaterby the motor T5;-and the-clutch which controls the actuation of the camshaft-56. islatched out. by, the viatch arm '19,. which is en.- gaged by the; latcharm =86! in. well .known manner.

When .the-rplayinggof the recordzis completed, the inwardposition of.the tone arm 83 or its re verse.-movement,- due to a spiral. or'eccentric groove on.-the--.record,.- releases the latch armfrom.1the--latch arm .19: sothat .the' clutch is -re-- engagedandctherecord changing cycleis resumed, to play; the recordcorresponding to th next ac" utated pirrIEZ whicheis engaged by the dogI41. In this .manner; all. the a'recorols corresponding .to,actuatedqbuttons areeplayed, provided theyhave been paid forby-theinsertionof proper coins.

In the case of thelast recording which has been. paid for, theswitchesilfi and Ililare opened im-- mediately the shaft M isdockedagainst rota-- tion. At thisatime, however,.the: motor. circuit ismaintained closed. until. after. the. record; is; played, then-clay 565being maintained energized;

throughclcsedswitch-Ifiland. closed switch I98..

After this .record .has. been .played :and the. rota-- tion ofthe camshaft .56 has .begun, theswitch. Ifil'is opened by the arm...I05so thatoperation of the machine is terminated.

In the event that no selections. are. made and that'th'e switches I18"and I19 are closed by the. insertion-of a'suitable coin orcoinsgtheswitch. I26"being closed;' the operationis as follows: i

Initial movement of the shaft 4'4 resultsin' en gagei'nent between thecontacts I02 and I03 and a single impulse is given to the motor I52.This impulse to the motor results in the closing of the switch I54 andthe completion of a circuit through switch I26, switch I54, switch I 18,relay I 80, and relay 91. Consequently, the detent wheel 93 is latchedagainst further movement at a position corresponding to the nextselection. Consequente ly, the machine will play records in successioncorresponding in number to the value of the coins inserted. Whenoperating in this manner, the arm I 42 moves step by step, butthe'contact I50 remains disconnected from the contact I46, owing to thefact that the dog I41 encounters no actuated pins. e

The relay 91 is in series with the relay I80. It is understood, ofcourse, that a ver large number of relays I89 may be arranged inparallel. In the event that a large number of remote stations select thesame recording for playing, then,

when the contacts I45 would move simultaneously into bridging relationwith the contacts I50 and I46, the current flowing through the relay 91would be distributed through all the relays I80 so that they might beinsufiiciently energized. Immediately the relay 91 is energized, theswitch 99 closes, short-circuiting the relay 91, Consequently, thecurrent flowing through the various relays I80 is no longer limited bythe impedance of the relay 91, which is now shortcircuited, thusinsuring sufiicient current to operate all the ratchet wheels I14. Itshould be noted that the contacts 99 are arranged so as to close in theshortest possible length of time after the energization of the relay 91to supply adequate current to th relays I80 without undue delay.

The efiect of the insertion of one or more coins in one of the chutesI95, I66, I61, of'any of the remote units or the control unit is toclose the switches I18, I19. If one remote selector unit is energized bythe insertion of coins and another similar unit is not so energized,then in the latter unit there is no connection between conductor I95 andthe switch I54. The motors I52 of all the control units move step bystep in unison, they all being connected to the lines I94 and I91. Theresulting movement of the arm I42 in the unit whichhas not beenenergized by coins is of no effect as far as selecting is concernedbecause i the associated switch I18 is open. The closing of the switchI19 by the insertion of one or more coins results in the energization ofthe relay I05. This relay closes the switch I92 so that the motor isstarted and is maintained in operation as long as the relay I05 isenergized. After the motor has started to operate, the switch I01closes, and consequently the relay I05 is energized through the switchI98 until all the recordings paid for have been played. The switch I01is opened mechanically at the end of the playing of each recording.While the ratchet wheel H4 is in credit position, the switch I19 remainsclosed so that the circuit through the relay I05 is maintained. Beforethe playing of the last paid for recording, the switch I19 opens, butthe circuit of the relay I05 is completed through switches I01 and I98.At the end of the playing of this last paid for recording, the switchI01 opens, the relay I05 is de-energized, and the'switches I92 and I98are opened so that the motor 15 is rendered inoperative and remainsinoperative until a further coin or coins are inserted;

As has been explained before, when a plurality of control or remotestations are provided, the

18 motors I52 move step by step in unison, i-Iowever, only the stationswhich are energized by coins have any effect in selection. If coins areinserted in one of the units and no selection is made, the switch I26remains closed, and as a result, the armature I42 and the shaft 44 moveone step as a result of the energization of the motors I52. When thatfirst step is completed, the switch I54 closes and the relay I of theselecting unit or units and the relay 91 are energized so that the shaft44 is located in the position to play the next recording. If a coin or aplurality of coins of higher denomination are placed in the coin chutes,the phonograph will play sequentially, that is, one record being played,

then the next record, then the next record, etc., the pinion I59rotating degrees between the playing of each recording. When noselections are made, the switch I29 is closed and the relays 91 and I80are energized when the switch I54 is closed after one actuation of themotor. It may be noted that sequential playing is provided by the use ofswitches I54 and I26 in circuit between the switch I18 and the arm I99.

In the modification of the invention illustrated in Fig. 22, a singlecoin chute 20I is provided which is adapted to receive a. suitablenumber of coins 202 which stack up edgewise in the chute. The lowermostcoin is adapted to engage an arm 203 which is pivotally mounted at 204.The arm 203 carries an upturned end 205 which is adapted to close thetwo switches I18 and I19. The resiliency of the switches is such that asingle coin 202 is able to move the arm 203 downwardly into contact witha stop 206, thus closing the switches. When no coin rests on the arm203, the resiliency of the leaves of the switches I18 and I19 isefiective to open the switches and raise the arm 203 away from the stop206. The armature of the relay I80 is provided with a nonmetallic coindischarging member 201. As shown in Fig. 22, the member 201 is displacedfrom the position of the lowermost coin 202. When the relay I80 isenergized, its armature moves to the right as viewed in Fig. 22 and thelowermost coin 202 is displaced, i. e., it is knocked out of itsindicated position by member 201. The coin engaging member 201immediately moves away from the position of the lowermost coin and theremaining coins, if any, in the chute 20I move down one step. It will bereadily understood that the relation of the switches I18 and I19 and therelay I80 is precisely the same as in the embodiment of the inventionillustrated in Fig. 21, and the connections of the four leads aredesignated by the same numbers as employed in the embodiment shown inFig. 21.

p In Figs. 15, 16, 17, and 18, I show a modified form of motor unit I52for driving a shaft I53A. The motor shaft has secured to it a pinion I55which engages with a gear I51 which is frictionally connected to thepinion I59, in the manner described in connection with the embodiment ofthe invention shown in Fig. 5. The elements I40, I4 I and I42 may beprecisely as described in connection with the aforesaid embodiment andthey will not be again described minutely. The shaft 'I53A of the motorI52 is hollow and accommodates in sliding relation a pin 208. This pinis caused to move longitudinally by means of a centrifugal governor 209mounted on the armature shaft and in remote relation to the pinion I55.The governor comprises a frame portion 2I0 which is mounted on the endof the armature shaft, this frame portion having pivotally mounts

